CBS prevails with 'CSI' repeat, new 'Brother'

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NEW YORK -- CBS captured Thursday night's primetime ratings thanks to a new "Big Brother" and an old "CSI."

"Big Brother" (8.1 million, 3.1 rating/10 share in adults 18-49) was the night's top show in the adults 18-49 demographic while "CSI" (10.7 million, 2.9/8) was the most watched show of the night, according to preliminary estimates released Friday afternoon by Nielsen Media Research. Final data won't be released until Monday, Nielsen said.

An accurate assessment of Thursday's preseason NFL matchup between Jacksonville and Green Bay won't be available until later, but it averaged 5.9 million viewers and a 2.1/7 in the demo in the preliminary estimates. That was good enough for second place for the night.

ABC and NBC were near the basement with their repeats of dramas and comedies, while CBS swept the night with the winning performance at 10 p.m. for "Without a Trace" (9.8 million, 2.8/8).